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Fixed editing of matrix values by defenition

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= 2025-11-26 18:22:30 +01:00
parent 04d9b35c36
commit 9bd18d3681
1 changed files with 11 additions and 3 deletions
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14
matrix.c
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@ -75,7 +75,9 @@ void clearMatrix(Matrix *matrix)
{
for (int i = 0; i < matrix->rows; i++) {
for (int j = 0; j < matrix->cols;j++) {
matrix->buffer[i + matrix->rows * j] = UNDEFINED_MATRIX_VALUE;
// Normally one would expect to work matrices like this, but it is supposed to be the other way around.
// matrix->buffer[i + matrix->rows * j] = UNDEFINED_MATRIX_VALUE;
matrix->buffer[j + matrix->cols * i] = UNDEFINED_MATRIX_VALUE;
}
}
free(matrix->buffer);
@ -87,7 +89,11 @@ void clearMatrix(Matrix *matrix)
void setMatrixAt(MatrixType value, Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
{
//checks, if the given incies are allowed
if((rowIdx) < matrix.rows && (colIdx) < matrix.cols) matrix.buffer[rowIdx + matrix.rows*(colIdx)] = value;
if((rowIdx) < matrix.rows && (colIdx) < matrix.cols) {
// Normally one would expect to work matrices like this, but it is supposed to be the other way around.
// matrix.buffer[rowIdx + matrix.rows*(colIdx)] = value;
matrix.buffer[colIdx + matrix.cols * rowIdx] = value;
}
}
MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int colIdx)
@ -95,7 +101,9 @@ MatrixType getMatrixAt(const Matrix matrix, unsigned int rowIdx, unsigned int co
//checks, if the given indices are allowed
if((rowIdx) < matrix.rows && (colIdx) < matrix.cols) {
MatrixType returnVal;
returnVal = matrix.buffer[rowIdx + matrix.rows*(colIdx)];
// Normally one would expect to work matrices like this, but it is supposed to be the other way around.
// returnVal = matrix.buffer[rowIdx + matrix.rows*(colIdx)];
returnVal = matrix.buffer[colIdx + rowIdx * matrix.cols];
return returnVal;
}
else return 0;